At this point, the polymer absorbed oxygen and generated insulating materials, which isolated the defective portion from the remainder of the capacitor. Despite the loss of some effective capacitance, the self-healing process had a negligible impact on the overall performance, while substantially reducing the LC [40, 41].
Tantalum electrolytic capacitors (TECs) have gained popularity due to their exceptional electrical performance, reliability, and high capacitance density . However, traditional TECs had limitations, particularly in high-frequency circuits, power supplies, and digital circuits.
Therefore, there is a growing need for high-performance capacitors with low ESR . Tantalum electrolytic capacitors (TECs) have gained popularity due to their exceptional electrical performance, reliability, and high capacitance density .
In 1956, H.E. Haring and R.L. Taylor from Bell Labs designed the first generation of solid tantalum electrolytic capacitors, which utilized tantalum pentoxide (Ta 2 O 5) as the dielectric layer, manganese dioxide (MnO 2) as the cathode material, and graphite silver paste as the auxiliary cathode layer .
This kind of capacitor had a high capacitance density, good low-temperature performance, and long service life, and was widely used in various electronic devices. However, solid tantalum electrolytic capacitors with MnO 2 still have several drawbacks. Firstly, the use of MnO 2 with high resistance makes it have a high ESR.
The effect of electroplating conditions on the electrical properties of the tantalum electrolytic capacitors (TECs) was comprehensively studied. The results demonstrated that incorporating a copper metal layer into the structure of the capacitors significantly reduced the ESR of TECs.
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In the context of the dielectric breakdown, self-healing designates a range of chemical processes, which spontaneously rearrange the atoms in the soot channels to …
The accumulation of the soot throughout a dielectric capacitor ultimately results in irreversible overall failure. We have developed a universal method for predicting the …
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The results show that, the self-healing energy increases by 58.59% with increasing voltage in the range of 950–1150 V; in the range of 30–90 °C, the self-healing …
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The accumulation of the soot throughout a dielectric capacitor ultimately …
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In Fig. 1, T 1 is the voltage regulator, the rated voltage is 380 V/400 V, the capacity is 100 kVA; T 2 is the step-up transformer, the rated voltage is 400 V/15 kV, the capacity is 100 kVA; L is the compensating reactor; C 1 is …
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In the context of the dielectric breakdown, self-healing designates a range of …
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This study aims to develop a novel self-healing polymer tantalum electrolytic capacitor with low equivalent series resistance (ESR), high-frequency performance, and a …
Abstract page for arXiv paper 2411.03721: Self-Healing in Dielectric Capacitors: a Universal Method to Computationally Rate Newly Introduced Energy Storage Designs. Metal …